Work-holder.



H. 0. WILSON.

WORK HOLDER.

APPLICATION FILED NOV. 1, 1911.

Patented Feb. 13,1912.

WAW

Wain/@5565. I

UNITED STATES PATENT OFFICE.

HARRY G. WILSON, OF NEW YORK, N. Y.

WORK-HOLDER.

Application filed November 1, 1911.

To all whom it may comma:

Be it known that I, HARRY C. VILSON, of

New York city, in the county of New York and State of New York, haveinvented cer tain new and useful Improvements in Work- Holders, of whichthe following is a specification.

The invention relates to a work-holder designed to be removably securedto a table or other support.

The principal object of the invention is to provide a work-holder whichcan be quickly secured in position for use.

Another object of the invention is to provide a work-holder which ispositive in action and quickly operated by a single movement.

A further object of the invention is to pro vide a work-holder whichwill enable tailors and seamstresses to rapidly adjust the cloth orother material in the work-holder, whereby it is to be held convenientlyfor working thereon.

A still further object of the invention is to provide a work-holder, sodesigned that its holding efficiency is increased as the weight of andpull on the cloth or work is increased.

A still further object of the invention is to provide a work-holder tobe used for both light and heavy work, being firmly fixed, when securedin place, by having large contact surfaces which come into directcontact with a table or other support; also being designed for strengthat its various parts and angles, and a still further object is to provide means for increasing or diminishing the tension on the work-holdingjaws.

My invention is described in the following specifications, of which theaccompanying drawings form a part, and in which similar referencecharacters indicate similar parts in each of the views, and in which:

Figure 1 represents an elevation of my improved work-holder andillustrates the application of same, a portion being broken away andpartly in section, to show certain parts. Fig. 2 represents a rearelevation of my device.

Referring to the drawings by numerals, the work-holder comprises:

A bed-j aw 1 adapted to bear on the upper surface of a table, said jawbeing formed with two spaced horizontally extending arms, the tops ofwhich are connected by a bridge 1 Specification of Letters Patent.

Patented Feb. 13, 1912.

Serial No. 658,066.

2 represents an angular arm formed on the forward edge of jaw 1, saidarm extending downwardly across the outer edge of the table and inwardlyunder jaw 1, and under the table, the arm being provided with afastening device, preferably a thumbscrew 3, adapted to engage the undersurface of the table.

4 represents a U-shaped arm which projects at right angles from one sideof the top of arm Qand over-hangs the forward part of the upper surfaceof jaw 1, being arranged so that it leaves an unobstructed openingbetween the free end of said U- shaped arm and the upper surface of jaw1, fro-m which upper surface it curves clownward and outward, extendingalong the outer edge of the table, thence upward and back over the pointof its connection with the jaw 1 and in a plane with arm 2.

5 represents a jaw formed on the free end of arm 4, a vertical surfaceof which is preferably flat and of a width and length desired, being ina plane with the rearward side of arm 2 and at right angles to the uppersurface of jaw 1.

6 represents a lever pivoted at 7 between the rearward ends of thehorizontal arms of jaw 1 and rearward of the bridge on jaw 1, said leverbeing provided with a stop 18 adapted to contact with the under surfaceof the bridge on jaw 1 for limiting the swing of the pivoted lever inone direct-ion.

Lever 6 is provided with a jaw 9, preferably round, of a diameter andlength adapted to cooperate with the opposing jaw 5. Jaw 9 is providedwith a sleeve 16, preferably of rubber or other yielding material, beinga means to produce a frictional contact with the cloth or work.

Lever 6 is designed in such form and so limited in its swing that itwill, when notrestrained either keep jaw 9 in operative contact with theopposing jaw 5 or if forced away from aw 5 will when freed automaticallyfall into operative contact with jaw 5; the jaws 5 and 9 thus graspingand securely holding the cloth or work.

It will also be noted that the invention is so designed that theautomatically acting lever 6 and jaw 9 are placed, when in use, beneaththe cloth 15. It is obvious that the weight of the cloth or work restingon said jaw and the necessary pull on the cloth or work greatlyincreases the gripping efiiciency of the members 5 and 9. It will alsobe noted that the cloth or work actually rests upon the frictionalrubber sleeve 16 on jaw 9, and that the pressure of the cloth or work onsaid frictional sleeve, still further increases the gripping action, anda slight forward pull on the cloth, wedges the same securely between thejaws 5 and 9, thereby resisting forward movement of the cloth, a slightrearward pull on the cloth releasing same. To further insure theautomatic action of said jaws, lever 6 is provided with a tension spring10, said spring being removably connected at one end with lever 6, at12, in an eye or hole in said lever. The other end of said spring isremovably connected with the screw-eye 14, said screw be ing connectedwith the rearward side of arm 2, and said screw, by being threaded intoa suitable aperture in said arm, is a means of regulating the tension ofsaid spring. Said spring, being removably connected at both ends, can bedispensed with if desired without impairing the successful use of thework-holder for light work.

Jaw 9 extends beyond the free end of jaw 5 a suflicient distance toconveniently serve as a thumb piece or handle, as shown in Fig. 2 of thedrawings.

To operate this work-holder, the jaws 5 and 9 are separated by anupwardly and rearwardly directed thumb pressure on the extended jaw 9,and said jaws when separated outline an unobstructed passage enteringthe loop of the U-shaped arm. Through said passage the cloth or work ispassed until said cloth or work is suitably placed, whereupon the thumbpressure is released on said jaw and the work is thereby gripped in amanner which is quite obvious.

The various parts of the device may be constructed of any propermaterial or in any suitable size, the form illustrated and de scribedbeing intended as the preferred form of construction. Therefore I do notlimit my invention to these specific details; but I consider as includedwithin the spirit of the present invention all such changes andmodifications as may fall within the scope of the appended claims.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Having thus fully described the invention, what is claimed as new is" 1.A work-holder including a clamp,hav ing an upper jaw formed with twohorizontal arms, said arms partly bridged across the top and adapted tobear on the top of a table, the lower jaw of said clamp being formedwith an arm extending downwardly from the front edge of the upper jawand inwardly under the same, said clamp being provided with athumb-screw and thereby adapted to coact with said arms for clamping thetable, a rigidly mounted over-hanging jaw supported by a U-shaped arm,said U-shaped arm projecting at right angles from one side of the armconnecting the tableclamping jaws, and a lever provided with a jawpivoted to the horizontal arms of the upper jaw, said lever beingpositioned to fall and bring its jaw into operating con tact with theover-h anging jaw and thereby adapted to hold the work.

2. A work-holder including a clamp, having an upper aw formed with twohorizontal arms, said arms partly bridged across the top and adapted tobear on the top of a table, the lower jaw of said clamp being formedwith an arm extending downwardly from the front edge of the upper jawand inwardly under the same, said clamp being provided with athumb-screw and thereby adapted to coact with said arms for clamping thetable, a rigidly mounted over-hang ing jaw supported by a U-shaped arm,said U-shaped arm projecting at right angles from one side of the armconnecting the table-clamping jaws, and a lever provided with a jawpivoted to the horizontal arms of the upper'j aw, said lever beingpositioned to fall and bring its jaw into operating contact with theover-hanging aw and thereby adapted to hold the work, and resilientmeans for holding the pivoted jaw in contact with said work.

In testimony whereof I have affixed my signature, in presence of twowitnesses.

HARRY C. XVILSON. Witnesses:

SYDNEY E. TAFT, FRANKLIN E. Low.

Washington, D, G.

